To give free rein, meaning “to allow more leeway,” derives from the idea of loosening one’s grip on the reins of a horse. Some people mistakenly understand the term as free reign. This is part of a complete episode. Transcript of...
On the spur of the moment means doing something suddenly or spontaneously. The expression comes from a horse rider’s spur, a sharp device used to urge a horse forward. The image is of action encouraged in the moment rather than through a careful...
Biting the bit, heard by Christina in Oakland on the BBC in a political story, may overlap with champing at the bit, meaning eager or raring to go. Horse tack suggests another possible shade in meaning. A horse that bites hard or gnashes at the bit...

